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Preparation and electrochemical performance of nanocarbon-isolated nano-sheet silicon lithium-ion battery anode material.
- Source :
-
Journal of Solid State Electrochemistry . Nov2022, Vol. 26 Issue 11, p2585-2593. 9p. - Publication Year :
- 2022
-
Abstract
- In this paper, nanocarbon-isolated nano-sheet silicon(Si) electrode Si@CNT/C has been developed by pyrolysis of the compound of Si and polyaniline (PANI)/CNT nanocomposite. The results suggest that CNT content in electrode plays a decisive role in the specific capacity, rate capability, and long-term cycle stability of the battery. Si@CNT(M)/C/graphite(G) electrode with high (10.8wt%) CNT content demonstrates the specific capacity of 1201 mAh·g−1 at 100 mA·g−1 current density, which is much better than 491 mAh·g−1 for the Si@CNT(S)/C/G with low (1.3wt%) CNT content. After 500 cycles, the Si@CNT(M)/C/G electrode still remains 700 mAh·g−1 specific capacity, while the Si@CNT(S)/C/G electrode decreases to 200 mAh·g−1. This is caused by CNT conductive network in the electrode, which can maintain not only the structural stability of the Si but also the conductivity throughout the cell cycles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14328488
- Volume :
- 26
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of Solid State Electrochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 159382475
- Full Text :
- https://doi.org/10.1007/s10008-022-05275-y